How to debug an exception handler ?

Tony Lambregts tony_lambregts at
Sat Apr 6 14:05:46 CST 2002

Laurent Pinchart wrote:

>Hi everybody,
>I have a windows program which raises an exception as part of its normal 
>execution (it tries to call int 0x01). The program setups an exception 
>handler, catches the exception, and resumes it execution after the call to 
>int 0x01. This works fine when run in wine.
>However, when I try to run the program in winedbg, the debugger catches the 
>exeception, interrupts the program execution, prints a register dump, stack 
>dump & backtrace, and waits. If I continue the execution using 'cont' (after 
>incrementing $eip by 2 to skip int 0x01), the program continues but the 
>exception handler installed bu the user program is not called.
>I was wondering if it was a bug or a normal behaviour, and if it is normal 
>behaviour, is there a workaround ?
>Thanks in advance for your help.
>Laurent Pinchart
Keep in mind that I am NOT a wine guru but it looks like copy protection 
to me. My guess it you use trace relay the same thing will occure as 
when you use the debugger.

Tony Lambregts

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